What is the value of -1/6+2/3(9-3/4)-1/2

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

Which of the following could be the ratio of the length of the longer leg 30-60-90 triangle to the length of its hypotenuse? check all that apply. a. 313 6 b. 3: 215 c. 18: 13 d. 1: 13 e. 13: 2 of. 3: 15